What's the difference between Arness and just prompting Claude Code directly?

[fredcallagan]

Claude Code is the engine; Arness is the process layer on top. When you prompt Claude Code directly, you get a single-shot response. Arness adds structured workflow stages — specification, planning, implementation, review, shipping — with artifacts at each step that you can inspect and revise before proceeding.

Concrete differences:

• Ceremony tiers (swift/standard/thorough) scale process to match task complexity automatically, so trivial fixes stay lightweight.
• Session recovery — if your session ends, entry points detect artifacts on disk and offer to resume where you left off.
• Artifact trail — specs and plans in .arness/ give you a reviewable record of what was decided and why.
• Specialist agents — parallel execution with dedicated agents for architecture, security, testing, UX, and code review.

Think of it as the difference between writing code ad-hoc versus working from a brief. You can still drop into raw Claude Code anytime.